Used 2021 Audi S6 Price in the US
A used 2021 Audi S6 in the US typically lists for $32,995–$37,990, with a median asking price of $35,999 across 13 active US dealer listings (as of 2026-10-15). The cheapest one listed right now is $27,995, a 2021 Quattro Prestige in Madison, NC — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.
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typical price per yearCheapest 10 listed right now
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$28,5042021 Audi S6 Quattro Prestige88,210 mi · West Palm Beach, FL · AutoNation Cadillac West Palm BeachView listing → -
$32,4992021 Audi S6 Quattro Premium Plus70,261 mi · Sacramento, CA · Reliable Auto SourceView listing → -
$32,9952021 Audi S6 Quattro Prestige77,050 mi · Westport, MA · Top Quality Auto SalesView listing → -
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$35,9992021 Audi S6 Quattro Premium Plus68,250 mi · Plantsville, CT · Auto House of SouthingtonView listing → -
$36,3722021 Audi S6 Quattro Premium Plus66,972 mi · Roselle, IL · Exclusive Auto HausView listing →
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$37,9902021 Audi S6 Quattro Prestige64,846 mi · Bethlehem, PA · Lehigh Valley ImportsView listing →
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2021 Audi S6 asks $32,995–$37,990. Cars this far under: expect high mileage, a base trim or a branded title — check the vehicle history.
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10 pinnedFAQ
How much does a used 2021 Audi S6 cost?
A used 2021 Audi S6 in the US typically lists for $32,995 to $37,990, with a median asking price of $35,999 across 13 active US dealer listings. Nine in ten are priced between $28,300 and $41,202 (as of 2026-10-15, source: UnderMarket Cars).
Is $36,000 a good price for a used 2021 Audi S6?
That sits at about the market median ($35,999) for a used 2021 Audi S6. Under $32,995 puts you in the cheapest quarter of active US listings and under $28,300 in the cheapest 5%; above $41,202 is the priciest 5% (as of 2026-10-15).
What is the cheapest used 2021 Audi S6 for sale right now?
$27,995 — a 2021 Audi S6 Quattro Prestige in Madison, NC, $8,004 under the median (as of 2026-10-15).
Are these MSRP or real asking prices?
Real asking prices from active US dealer listings, deduplicated by VIN — not manufacturer MSRP. They already reflect dealer discounts, and they exclude tax, title, registration and dealer fees.
How often are prices updated?
The listing data behind UnderMarket Cars is rebuilt from live US dealer inventory every few hours, and this used 2021 Audi S6 page is regenerated from it when it is requested. The figures on this page are from 2026-10-15.
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Prices updated 2026-10-15. Data covers active dealer listings across the USA.